Re: [PATCH REVIEW] udf: Fix lock inversion between iprune_mutex and alloc_mutex (v2)

[Ingo Oeser]

Hi Jan,

On Monday 18 August 2008, Jan Kara wrote:
> A memory allocation inside alloc_mutex must not recurse back into the
> filesystem itself because that leads to lock inversion between iprune_mutex and
> alloc_mutex (and thus to deadlocks - see traces below). alloc_mutex is actually
> needed only to update allocation statistics in the superblock so we can drop it
> before we start allocating memory for the inode.

On a quick review, this is correct.


Best Regards

Ingo Oeser
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